/* Copyright (C) 2000-2003 MySQL AB

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

/* Written by Sergei A. Golubchik, who has a shared copyright to this code */

/* some definitions for full-text indices */

/* #include "myisam.h" */

#ifndef _ft_global_h
#define _ft_global_h
#ifdef __cplusplus
extern "C"
{
#endif

#define HA_FT_MAXBYTELEN 254
#define HA_FT_MAXCHARLEN (HA_FT_MAXBYTELEN / 3)

  typedef struct st_ft_info FT_INFO;
  struct _ft_vft
  {
    int (*read_next)(FT_INFO *, char *);
    float (*find_relevance)(FT_INFO *, byte *, uint);
    void (*close_search)(FT_INFO *);
    float (*get_relevance)(FT_INFO *);
    void (*reinit_search)(FT_INFO *);
  };

#ifndef FT_CORE
  struct st_ft_info
  {
    struct _ft_vft *please; /* INTERCAL style :-) */
  };
#endif

  extern const char *ft_stopword_file;
  extern const char *ft_precompiled_stopwords[];

  extern ulong ft_min_word_len;
  extern ulong ft_max_word_len;
  extern ulong ft_query_expansion_limit;
  extern char ft_boolean_syntax[15];

  int ft_init_stopwords(void);
  void ft_free_stopwords(void);

#define FT_NL 0
#define FT_BOOL 1
#define FT_SORTED 2
#define FT_EXPAND 4 /* query expansion */

  FT_INFO *ft_init_search(uint, void *, uint, byte *, uint, CHARSET_INFO *, byte *);
  my_bool ft_boolean_check_syntax_string(const byte *);

#ifdef __cplusplus
}
#endif
#endif
